Anti-malate dehydrogenase 1B, NAD (soluble) antibodies enable researchers to detect and measure the malate dehydrogenase 1B, NAD (soluble) antigen in biological samples. This target is a reported synonym of the MDH1B gene, which encodes malate dehydrogenase 1B. This protein is known to function in metabolic processes, among other biological roles. The human version of malate dehydrogenase 1B, NAD (soluble) has a canonical amino acid length of 518 residues and a protein mass of 58.7 kilodaltons, although 3 isoforms have been identified. It is reported to be notably expressed in the nasopharynx, fallopian tube, and bronchus. Other names for this target antigen include putative malate dehydrogenase 1B and malate dehydrogenase 1B, NAD (soluble).